New Hampshire authorities say a dozen people were injured in crashes on Interstate 93 Friday when the highway went from dry to snow-covered in three minutes. This weekend Vermont, New Hampshire, and Maine are expected to see more snow.

Manchester District Fire Chief Al Poulin told WMUR-TV that there were many vehicles on the road driving faster than the 75 mph speed limit, including some apparently heading to ski resorts for the weekend.

Department of Transportation spokesman Bill Boynton said the highway went from dry pavement to snow covered in three minutes on Friday.

This weekend Northern New England is in for a mix of snow, sleet and rain.

A winter storm is expected to hit Vermont, New Hampshire, and Maine starting with snow on Saturday afternoon. Snow is expected to change to sleet and eventually rain by Sunday.